pH 510/ion 510 bench manual - BME Shared Labs

pH/mV/Ion/°C meterThepH 510 and Ion 510 SeriesBenchtop MetersMIMR▲ ▼MODEHOLDCALMEASENTERON/OFFpH 510—pH/mV/°C meterWD-35619-00, -02, -03, -05, -07,-08, -10, -12, -15, -17Ion 510—pH/Ion/mV/°C meterWD-35619-20, -22, -23, -25, -27, -282/00 ©2000 00702-93

Table of contents1. Introduction............................................................................................................................................................................4-7• Keypad • Rear panels • Optional Electrode Holder2. Starting up.................................................................................................................................................................................83. pH calibration and measurement...................................................................................................................................9-13• Calibration • Measurement (with manual or automatic temperature compensation) • Hold function4. mV calibration and measurement .................................................................................................................................14-15• Calibration • Measurement • Hold function5. Ion calibration and measurement (Ion 510 only)......................................................................................................16-18• Calibration • Measurement • Hold function6. Memory Function.....................................................................................................................................................................19• Memory input • Memory recall7. Temperature Calibration .......................................................................................................................................................208. Setup mode ........................................................................................................................................................................21-23• Clear memory • Electrode data • Buffer selection • Reset9. Electrode care...................................................................................................................................................................24-25• Electrode activation • Electrode maintenance • Storing pH/ORP electrode • Electrode cleaning10. Troubleshooting................................................................................................................................................................26-2711. Additional information .........................................................................................................................................................2812. Specifications..........................................................................................................................................................................2913. Accessories .............................................................................................................................................................................3014. Warranty.....................................................................................................................................................................................3115. Return of items........................................................................................................................................................................31introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsQuick tipaccessorieslet the mini table of contents in the outermargins of this manual guide you instantlyto the right sectionwarrantyreturn ofitems3

1. IntroductionMIMR▲ ▼MODEpH/mV/Ion°C meterHOLDCALMEAS ON/OFFENTERThank you for purchasing the OAKTON ® WD-35619-seriesBenchtop meters. These meters are microprocessorcontrolled, user-friendly and reliable. The large customizedLCD allows clear, easy operation. The display has modeannunciators for pH, temperature, mV and ion readings.KeypadSee Figure 1.introductionA large membrane keypad with touch feedback makes themeter easy to use. Names and symbols describe thefunction button controls.starting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctionMIFigure 1MR▲ ▼HOLDMODECALMEASON/OFFENTERKeyON/OFFCAL/MEASDescriptionPowers the meter ON/OFF. When the meter isswitched on, it starts in the mode the meterwas last in when powered down.Switches between the measurement and calibrationmodes of the meter. In SETUP mode,CAL/MEAS returns to the measurement mode.MODE pH 510:Measurement: MODE switches between pHand mV.Calibration: MODE switches from pH to temperaturein the pH calibration mode (if MODE ispressed again, it will NOT switch back to pH).temperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitemsMI/▲MR/▼HOLDENTERIon 510:Measurement: MODE switches between pH,mV and ion.Calibration: MODE switches from pH to temperaturein the pH calibration mode (if MODE ispressed again, it will NOT switch back to pH).▲ Scrolls values in mV and temperaturecalibration mode. Selects calibration points inthe ion calibration mode (Ion 510). Scrolls to thenext program in the SETUP mode.MI inputs measurements into memory andscrolls through memory values.▲ Scrolls values in mV and temperaturecalibration mode. Selects calibration points inthe ion calibration mode (Ion 510). Scrolls to theprevious program in the SETUP mode.MR recalls measurements from memory andscrolls through memory values.Freezes a measurement on the display. Pressagain to get current readings.Confirms and enters the value selected forcalibration. Enter also functions in the memorymode.4

Rear PanelSee Figure 2.The OAKTON ® WD-35619-series meters provide acomplete set of input connections for the variousaccessories commonly used. Listed in the table beloware details of the connections that you can make.Connection FunctionATC Phono jack connection from the temperatureprobe for Automatic TemperatureCompensation.INPUT For connection to sensor electrodes withBNC type connectors. The meteraccepts any pH, ORP or ISE with BNCconnector. Always make sure that theconnector is clean and dry.REF For connection to pin type referenceelectrode normally used with half cell(mono) type pH electrodes or ISEs.REC For connection to strip chart recorders.Use subminiature plug with positive tip.GND For connection to the earth ground jack(standard tip connectors).DCFor connection of the AC adapter powersupply (included).introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeATC INPUT REF REC GND DCelectrodecareFigure 2troubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems5

Shipping positionBottom of meterOptional Electrode HolderIf you have purchased a benchtop meterwith the optional electrode holder, theelectrode holder is included in the samebox as the meter.introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeFigure 3Figure 4Bottom of meterTo attach the electrode holder to the meter:1. The electrode holder base attached tothe bottom of the meter comes in theshipping position.— See Figure 3.2. Use a Phillips screwdriver to remove thescrew holding the electrode holder inshipping position.— See Figure 3.3. Slide the electrode base away from themeter until the second screw slot linesup with the original screw hole. Use thescrew removed earlier to secureelectrode holder base into position.— See Figure 4.4. The electrode holder arm is reversible. Ifdesired, remove screw holding electrodeholder base and slide base out ofbrackets. Slide base into brackets onopposite side and replace screw.— See Figure 5.electrodecaretroubleshootingBottom of meteradditionalinformationspecificationsaccessorieswarrantyreturn ofitemsFigure 56

pH/mV/Ion/°C meter5. To install the electrode arm, turn meterback to the upright position.— See Figure 6.6. Line up the hole on the base of theelectrode holder arm with the peg onthe electrode holder base. Slide the holesecurely onto the electrode holder base.— See Figure 7.The electrode arm is now ready to swinginto desired position.— See Figure 8.introductionstarting upFigure 6pH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeFigure 7electrodecaretroubleshootingThe electrode arm is nowready to swing intodesired position.additionalinformationspecificationsaccessoriesMIMR▲ ▼MODEHOLDCALMEASENTERON/OFFwarrantyFigure 8return ofitems7

2. Starting UpAttention!Do not get water on the BNC connectorduring operation. Avoid touching theconnector with soiled or wet hands.introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingBack panel connectionsSee Figure 9 .1. Connect the AC adapter from an AC power source tothe power jack (DC). Slide in the adapter jack of the A/Cadapter into the meter until it is firmly seated. Voltage isset at 9V and the current is at 500 mA, (center positiveconnector).2. Connect a sensor electrode to the BNC inputconnector (INPUT). The meter can accept any pH, ORP,or Ion Selective Electrode with a BNC connector. Makesure the connector is clean and dry. Slide the electrodeconnector of the electrode over the BNC connectorsocket. Make sure the slots of the connector are in linewith the posts of the socket. Rotate and push the connectorclockwise until it locks. For separate referenceelectrodes, push electrode pin into jack marked “REF”.3. Connect a temperature probe to the input jackmarked ATC. Insert the probe into the jack markedwith ATC on the rear of the instrument panel.4. Connect your chart recorder to the jack marked RECYou can connect chart recorders or other data collectiondevices. Plug in the sub miniature (2.5 mm) connectorfrom the chart recorder into the jack marked with REC.Output signal is a mV signal equal to the measuredelectrode output. The tip of the connector is positive,the sleeve is negativeadditionalinformationspecificationsaccessoriesATC INPUT REF REC GND DCwarrantyfortemperatureprobefor sensorelectrodefor separatereferenceelectrodefor chartrecorderforgroundforAC adapterreturn ofitemsFigure 98

3. pH calibration and measurementFor best accuracy calibrate at least a two points usingfresh pH buffers. Select calibration buffers with calibrationvalues closest to the measurement range you expectto work in. A three point calibration (USA buffers: 4.01,7.01, and 10.01 or NIST buffers: 4.01, 6.86 and 9.18)ensures maximum accuracy throughout the measurementrange.For quick checks with less accuracy, perform a one pointcalibration. Select the buffer value closest to themeasurement range you will work in.introductionIf you choose to calibrate to only 1 or 2 pH values, theolder calibration values you do not calibrate to will remainstored. These old stored calibration values may causeaccuracy loss when your readings are close to the oldstored calibration values. To clear old calibration data,reset the meter as shown in Section 8, Program 4.0 onpage 23.For ATC measurements, attach the temperature probeto the meter. The ATC mode annunciator shows on thedisplay. —See Figure 10. Insert the probe into the solutionto be measured so that the sample temperature can berecorded and pH readings automatically temperaturecompensate. If manual temperature compensation ispreferred, do not plug a temperature probe into themeter.Figure 10MEASpHCATCstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationDO NOT REUSE SOLUTIONS AFTER CALIBRATION.Contaminants in the solution can affect the calibration,and eventually the accuracy of the measurements.All new pH calibrations will over-ride existing stored pHcalibration data at these calibration points. The meterretains stored pH calibrations even when the meter isturned OFF.setupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems9

pH calibrationMEASpHCATCNOTE: We recommend that you perform at least a2-point calibration using buffers that bracket (one aboveand one below) the expected sample range. You canperform a 1-point calibration, but make sure that thebuffer value is close to the sample value you are measuring.Select pH 4, 7, or 10 buffers in pouches or bottlesfrom the OAKTON standard buffer solutions.introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyFigure 11Figure 12READYCALCALpHpHpHpH1. Press the ON/OFF key. All the LCD segments displayfor a few seconds. The LCD switches to the last modethe meter was turned OFF in when powered downfrom the key pad. —See Figure 11The customized LCD display will indicate the following:Display RemarksMEAS Measurement mode is selected.pH Unit of measurement°C Unit of temperature measurementATC Automatic Temperature Compensation(if temperature probe or ”All-in-One“ probeis connected)pH Calibration1. Make sure the meter is ON and if necessary, press theMODE key to select pH mode. The pH indicatorappears in the upper right hand corner of the display.—See Figure 11.2. Rinse the electrode in deionized water or rinse solution.If using the ATC function with a separate temperatureprobe, rinse the temperature probe as well. DO NOTWIPE THE pH OR TEMPERATURE PROBES DRY!Wiping the probes causes static, and will create calibrationand measurement instability.3. Select the pH buffer and pour some into a CLEANcontainer.4. Dip the probe into the calibration buffer. The end of theprobe must be completely immersed into the sample.Stir the probe gently to create a homogeneous sample.5. Press CAL/MEAS to enter the pH calibration mode.The CAL indicator appears. The primary display willshow the measured reading while the smallersecondary display will indicate the pH standard buffersolution. —See Figure 12.The meter automatically recognizes the buffers in the setyou have selected in the SETUP mode (see page 23 forinstructions on how to select buffer sets): USA (4.01,7.00 or 10.01) or NIST (4.01, 6.86, or 9.18) buffers.return ofitemsFigure 137. Wait for the measured pH value to stabilize (when theREADY indicator displays in the left hand corner)—See Figure 13.10

8. Press the ENTER button. The primary display flashesthe calibration value. The calibration point is nowstored in the meter. —See Figure 14.• If you are performing a one-point calibration, pressCAL/MEAS to return to the measurement modeand start taking pH readings.READYCALpHpH• If you are performing a multi-point calibration go tostep 9.9. Rinse the probe with de-ionized water or a rinsesolution, and place it in the next pH buffer. The meterautomatically switches to the next buffer solutionselected in the secondary display.Figure 14introduction10. Wait for the measured pH value to stabilize (when theREADY indicator displays in the left hand corner)11. Press the ENTER button. The primary display flashesthe calibration value. The calibration point is nowstored in the meter.• If you are performing a two-point calibration, pressCAL/MEAS to return to the measurement modeand start taking pH readings.• If you are performing a three-point calibration goto step 12.12. Rinse the probe with de-ionized water or a rinsesolution, and place it in the next pH buffer.starting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunction13. Wait for the measured pH value to stabilize (when theREADY indicator displays in the left hand corner).temperaturecalibration14. Press the ENTER button. The primary display flashesthe calibration value. The calibration point is nowstored in the meter. The meter automatically returnsto the pH measurement mode after a three-pointcalibration is performed.NOTES:To exit from pH calibration mode without confirmingcalibration, DO NOT press ENTER in step 8. PressCAL/MEAS instead.If the selected buffer value is not within the acceptedwindow (see below) from the measured pH value: theelectrode and buffer icon blink and ERR annunciatorappears next to the secondary display. Press CAL/MEASto exit the ERR condition.—See Figure 15.Window of Accepted Values:USA 4.01 ±1.007.00 ±1.5010.01 ±1.00Figure 15ERRCALpHpHsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyNIST 4.01 ±1.006.86 ±1.259.18 ±1.00return ofitems11

pH Measurementintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementFigure 16MEASCALpHCATCCThis meter is capable of taking measurements withautomatic or manual temperature compensation. Automatictemperature compensation only occurs when a temperaturesensor is plugged into the meter. If there is no temperaturesensor plugged into the meter, the default setting is automatically25°C (if the meter has never been manually set fortemperature) or the last manually set value will display. Youcan manually set the temperature to match your workingconditions using a separate thermometer.Automatic Temperature CompensationFor automatic temperature compensation (ATC) simplyplug the temperature probe into the meter (see page 8 fordirections). The ATC indicator will light on the LCD.—See Figure 16..NOTE: If you are using a temperature probe, the probemust be submersed in the liquid you are measuring.Manual Temperature CompensationIMPORTANT: For manual compensation, you mustdisconnect the temperature probe.memoryfunctionFigure 171. Switch the meter on. Press the MODE key to select pHmode.temperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationFigure 18MEASCALCpH2. Press the CAL/MEAS key to enter pH calibration mode.The CAL indicator will appear above the primary display.3. While the pH calibration mode, press the MODE key toenter temperature calibration mode. The primary displayshows the current temperature setting and thesecondary display shows the default value 25°C (if themeter has never been manually set for temperature) orthe last manually set value if the meter has previouslyset for manual temperature compensation. If you havenot set the current temperature setting the primarydisplay will also show the default value of 25°C.—See Figure 17.4. Check the temperature of your sample using an accuratethermometer.specificationsC5. Press the ▼ or ▲ keys to offset the temperature to themeasured value from step 4. —See Figure 18.accessoriesFigure 196. Press ENTER to confirm the selected temperature andto return to the pH measurement mode.warrantyThe meter will now compensate pH reading for themanually set temperature. —See Figure 19.return ofitemsNOTE: To exit this program without confirming themanual temperature compensation value, DO NOT pressENTER in step 6. Press CAL/MEAS instead.12

Taking pH MeasurementsBe sure to remove the electrode soaker bottle or protectiverubber cap on the electrode before measurement.To take readings:1. Rinse the probe with deionized or distilled water beforeuse to remove any impurities adhering to the probebody. If the pH electrode had dehydrated, soak it for30 minutes in OAKTON electrode storage solution or a2M-4M KCl solution.MEASpH2. Press ON to switch on meter. The MEAS annunciatorappears on the top center of the LCD. The ATC indicatorappears in the lower right hand corner to indicateAutomatic Temperature Compensation if temperatureprobe is plugged. (For Manual TemperatureCompensation see page 12)—See Figure 20.3. Dip the probe into the sample. When dipping the probeinto the sample, the sensor or the glass bulb of theelectrode must be completely immersed into thesample. Stir the probe gently in the sample to create ahomogenous sample.4. Allow time for the reading to stabilize. When thereadings stabilize, a READY indicator displays. TheREADY mode shows the readings are stable within arange of ±0.01 pH. When this occurs, READY appearson the top left corner of your display.—See Figure 21.Figure 20READYFigure 21MEASCATCpHCATCintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibration5. To toggle between pH and mV in the pH 510, or totoggle between pH, mV and ion in the Ion 510, pressthe MODE key.setupmodeelectrodecareHOLD FunctionThis feature lets you freeze the value of pH and temperature,mV and temperature or Ion and mV (Ion 510 only).HOLD can be used anytime when in MEAS mode.1. To hold a measurement, Press the HOLD key while inmeasurement mode. ”HOLD“ will appear on thedisplay. —See Figure 22.HOLDFigure 22pHCATCtroubleshootingadditionalinformationspecifications2. To release the held value, press HOLD again. Continueto take measurements.accessorieswarrantyreturn ofitems13

4. mV calibration and measurementintroductionstarting upFigure 23MEASCALmVCATCmVmV calibrationThe customized LCD display will indicate the following:Display RemarksMEAS Measurement mode is selected.R.mV Unit of measurement°C Unit of temperature measurementATC Automatic Temperature Compensation(if temperature probe or ”All-in-One“ probeis connected)mV CalibrationpH calibrationandmeasurementmV calibrationandmeasurementFigure 241. Make sure the meter is ON and if necessary, press theMODE key to select mV mode. The mV indicatorappears in the upper right hand corner of the display.—See Figure 23.Ion calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingFigure 25MEASCALmVR.mV2. Press the CAL/MEAS key The CAL indicator appearsabove the primary display. The primary display showsthe relative mV reading and the secondary displayshows the absolute mV value. —See Figure 24.NOTE: If you have never calibrated relative mV or if themeter has been reset, the value shown in the primarydisplay is the same as the absolute mV value.3. Press the ▲ or ▼ keys to enter the relative mV valuethat matches your desired reading. —See Figure 25.4. Press the ENTER key to confirm the reading and toreturn to the measurement mode. The primary displaynow shows the relative mV reading. The R.mV indicatorappears in the upper hand corner. The meter automaticallyreturns to the mV measurement mode the ENTERkey is pressed. —See Figure 26.additionalinformationspecificationsFigure 26CATCNOTE: New mV calibrations will over-ride existing thestored mV calibration data. The meter retains stored mVcalibrations even when the meter is turned OFF.accessorieswarrantyreturn ofitems14

mV Measurement1. Make sure you are in the mV measurement mode.Press the MODE key to choose the mV mode.2. Dip the electrode into the sample. The sensor or glassbulb of the electrode must be completely immersedinto the sample. Stir the electrode gently to create ahomogeneous sample.READYMEASR.mV4. Allow time for the reading to stabilize. The primarydisplay will show the mV reading, and the secondarydisplay will show the current temperature reading. Whenthe readings stabilize, a READY indicator displays. TheREADY mode shows the readings are stable within±0.1 mV. When this occurs, READY appears on the topleft corner of your display.—See Figure 27.5. To toggle between pH and mV in the pH 510, or totoggle between pH, mV and ion in the Ion 510, pressthe MODE key. —See Figure 28.Figure 27MEASCATCppmintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementHOLD FunctionFigure 28Ion calibrationandmeasurementThis feature lets you freeze the value of pH and temperature,mV and temperature or Ion and mV (Ion 510 only).HOLD can be used anytime when in MEAS mode.1. To hold a measurement, Press the HOLD key while inmeasurement mode. ”HOLD“ will appear on thedisplay. —See Figures 29 and 30.2. To release the held value, press HOLD again. Continueto take measurements.HOLDR.mVmemoryfunctiontemperaturecalibrationsetupmodeelectrodecareCATCtroubleshootingFigure 29additionalinformationspecificationsHOLDppmaccessoriesFigure 30warrantyreturn ofitems15

5. Ion calibration and measurement (Ion 510 only)introductionIon calibrationThis instrument is capable of up to three-point ion calibrationwith a minimum of two-point calibration. Calibrationvalues are 0.10, 1.0, 10.0 or 100.0. All calibration shouldbe one decade apart. For example you may perform threepointcalibration to 0.10, 1.0 and 10.0, or two-point calibrationto 10.0 and 100.0. Do NOT perform two-pointcalibration to 1.0 and 100.0 the meter will display ”Er4“.For best accuracy calibrate your meter to points withsimilar concentrations to the solutions you want to test.starting uppH calibrationandmeasurementION CalibrationThe customized LCD display will indicate the following:Display RemarksMEAS Measurement mode is selected.ppm Unit of measurementmV calibrationandmeasurementFigure 311. Connect an Ion Selective Electrode (ISE) to the BNCinput connector on the back of the meter (See page 8)and turn the meter ON.Ion calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingFigure 32READYCALCALppmppm2. Press MODE to select ion measurement mode. If themeter has not been previously calibrated in the Ionmode, the display will read ”- - -“ in the primary display—See Figure 31.3. Dip the electrode into the first calibration standard.Make sure to start with the calibration standard that hasthe lowest concentration and move up to the standardsthat have higher concentrations.4. Press CAL to enter the ion calibration mode. The CALindicator appears above the primary display and primarydisplay reads ”0.10“ —See Figure 32.5. The first calibration point of 0.10 ppm appears on thedisplay. If you do NOT wish to calibrate to this point,press ▲ (up arrow) to skip and continue to the nextcalibration point of 1.0 ppm or 10.0 ppm.additionalinformationspecificationsaccessorieswarrantyFigure 33READYCALppm6. If you DO wish to calibrate to 0.10 ppm, make sure theelectrode is in the 0.10 calibration standard. The meterwill display the mV output of your electrode in the standardsolution in the lower display. Allow the mV readingto stabilize. When the reading stabilizes the READYindicator will appear on the display. —See Figure 33.Stabilization may take a few minutes depending onelectrode and standard concentration. Electrode responsein low concentrations is much slower than response inhigh concentrations.16return ofitemsFigure 347. Press ENTER to confirm your calibration. The primarydisplay will flash for a few seconds —See Figure 34. Themeter will move on to the next calibration standard of1.0 ppm.

8. Rinse off the electrode with deionized water beforeplacing it in the next calibration standard.9. Allow meter to stabilize in the next calibration standard.Wait for the READY indicator to appear before youpress the ENTER key to confirm the second calibrationpoint. The primary display flashes for a few secondsthen moves to the next calibration point of 10.0 ppm.If you are performing a 2-point ion calibration, pressCAL/MEAS. ”SLO“ appears in the primary display with themV indicator, the number in the secondary display is theactual electrode slope in mV. —See Figure 35. After a fewseconds the meter reverts to the measurement mode. Youare now ready to take ion measurements. If the slope isoutside acceptable limits or if incorrect standards have beenused the primary display will show Er3. —See Figure 36.If you are performing a 3-point ion calibration, rinse off theelectrode with deionized water and place it in the nextcalibration standard.10. Allow meter to stabilize in the next calibration standard.Wait for the READY indicator to appear before youpress the ENTER key to confirm the third calibrationpoint. The primary display flashes for a few secondsthen ”SLO“ appears in the primary display with the mVindicator, the number in the secondary display is theaverage electrode slope in mV. —See Figure 35. After afew seconds the meter reverts to the measurementmode. You are now ready to take ion measurement.NOTES: You may compare the average electrode slopevalue with the expected slope value for your electrodefrom your electrode manual to verify electrode operation.If you want to leave the calibration mode prior to confirmingtwo calibration points, press the CAL/MEAS key to exit thecalibration mode. The meter will revert to back to the earliercalibration curve. If you have calibrated to two points pressingCAL/MEAS will confirm the new calibrationYou must calibrate to at least two points in order forcalibration to take effect. If you only confirm the onecalibration point, the meter will display ”Er2“ when youexit the calibration mode, and the meter will revert back tothe earlier calibration curve.—See Figure 37.Figure 35Figure 36READYCALERRCALERRmVintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsNew ion calibrations will over-ride existing the stored ioncalibration data. The meter retains stored ion calibrationseven when the meter is turned OFF.Ion calibrations will be erased if the power cord isunplugged or power is cut off to the AC adapter even if themeter is turned off.Figure 37accessorieswarrantyreturn ofitems17

MEASIon measurement1. Turn meter ON. Press MODE to select ionmeasurement mode. —See Figure 38.ppm2. Prepare samples as necessary (i.e. add Ionic StrengthAdjuster). Sample preparation varies depending on iontype—see your electrode manual for details on thespecific electrode that you are using.introductionFigure 383. Dip electrode into the sample. The sensor or glass bulbof the electrode must be completely immersed into thesample.starting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctionREADYFigure 39MEASppm4. Allow time for the reading to stabilize. When the readingsstabilize, a READY indicator displays. The READYindicator shows when the readings are stable. Whenthis occurs, READY appears on the top left corner ofyour display. The reading holds until the measured valuefluctuation exceeds the set limits. —See Figure 39.NOTE: The lower display in the ion measurement modeshows mV that correlates to the electrode output. Changein mV will typically be 59.7 mV for monovalent ions (1 + or1 - charge) and 29.8 mV for divalent ions (2 + or 2 - charge).HOLD FunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingThis feature lets you freeze the value of pH and temperature,mV and temperature or Ion and mV (Ion 510 only).HOLD can be used anytime when in MEAS mode.1. To hold a measurement, Press the HOLD key while inmeasurement mode. ”HOLD“ will appear on thedisplay—See Figure 40.2. To release the held value, press HOLD again. Continueto take measurements.additionalinformationHOLDppmspecificationsFigure 40accessorieswarrantyreturn ofitems18

6. Memory functionsMemory InputYour meter can store up to 50 sets of data in anycombination of values:pH 510 meter:• pH and temperature• mV (or relative mV) and temperature.Ion 510 meter:• pH and temperature• mV (or relative mV) and temperature.• ion and mVFor example, you can store 32 pH and 18 mV values for thepH 510 or 15 ion, 12 mV and 23 pH values for the Ion 510.MEMMEMintroductionstarting upTo store a readings:1. During any measurement or HOLD function, press theMI key to input any data into the memory2. MEM, “StO” and memory number will flash. Themeter then returns to measurement mode.—See Figure 41.NOTE: If the memory is full, the first value stored will beerased to create space for the new value.Figure 41pH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementMemory RecallMEMmemoryfunctionThis function recalls the previous readings stored in thememory. You can only access MR from the measurementmode. Memory recall is in “Last In First Out” order.temperaturecalibrationTo recall readings:1. Press the MR key once to retrieve the last readingstored. The memory location screen—MEM, “LOC”and the memory number—will flash on the display. ——See Figure 42.Figure 42MEMsetupmodeelectrodecare2. Press the ENTER key to recall the reading storedunder that memory number. —See Figure 43.pHtroubleshooting3. Press the ENTER key again to return to the memorylocation screen. The display automatically moves tothe next memory location screen. —See Figure 44.4. If necessary, press the ▲ key to select the nextmemory location screen; press the ▼ key to selectthe previous memory location screen.5. Repeat steps 2-4 to review additional stored data sets.Figure 43MEMCadditionalinformationspecificationsaccessories6. To exit Memory Recall, press the MEAS key to returnto the measurement mode.warrantyNOTES: Readings stored in memory are retained even ifthe unit is turned off. To erase all readings stored inmemory, see program P1.0 on page 21.Figure 44return ofitems19

7. Temperature calibrationintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationFigure 45Figure 46MEASCALpHCATCpHpHTemperature CalibrationIn this calibration procedure, the ATC probe is attachedto the meter and the ATC annunciator displays onthe right hand side of the LCD.—See Figure 45.1. Dip the temperature probe into a solution of knowntemperature, such as a temperature bath for a fewminutes until the temperature probe stabilizes.2. To perform temperature calibration, you must be in thepH measurement mode.3. Press MODE to switch to the pH measurement mode ifyou are in the mV or ion measurement modes.4. Press CAL/MEAS to enter pH calibration mode.—See Figure 46.5. Press MODE again to switch to temperature calibration—See Figure 47.6. Press ▲ and ▼ to scroll to the correct temperaturevalue corresponding to the known solutiontemperature. The meter allows a limit of ±5°Cvariation (with 0.1°C resolution) of the input reading,and of the original displayed reading.7. Once you select the correct temperature, press ENTERto confirm. The meter automatically returns to the pHmeasurement mode.NOTE: The meter will not allow input values that exceedthe allowable limit of ±5°C of the original displayedreading.setupmodeCALelectrodecareCATCtroubleshootingFigure 47additionalinformationspecificationsaccessorieswarrantyreturn ofitems20

8. Setup ModeThe advanced SETUP mode lets you customize yourmeter’s preferences and defaults:P1.0: Memory clear (CLr)P2.0: Viewing electrode data (ELE)P3.0: Selecting buffer sets (bUF)P4.0: Reset to factory default settings (rSt)To enter the SETUP mode:1. Turn meter OFF.2. With meter off, press and hold the MODE key.Continue to hold down the MODE key while pressingand releasing the ON key. The will show the SETUPindicator. —See Figure 48. Release the MODE key if theSETUP indicator is present. If the display indicates youare in the measurement mode (MEAS indicator) turnthe meter off and try step 2 again until SETUPappears.SETUPFigure 48MEMintroductionstarting uppH calibrationandmeasurementNOTE: To exit the SETUP mode at anytime withoutconfirming changes press CAL/MEAS until themeasurement mode reappears. If the meter is inside aprogram, press CAL/MEAS two times to revert themeter to the measurement mode.P1.0: Memory ClearUse this program to clear all memory values when youneed to store a new series of values. This lets you avoidconfusing the old values with the new ones. NO is thedefault setting.1. Enter the SETUP mode as described above. The meterautomatically goes to program P1.0. CLr appears in theprimary display and P1.0 in the secondary display.—See Figure 48.2. Press the ENTER key to enter program P1.0.3. Press ▲ and ▼ keys to toggle between NO and YES.—See Figures 49 and 50.• NO retains current memory values.• YES clears all memory4. Press ENTER to confirm selection and return to theSETUP mode. Press CAL/MEAS to return to themeasurement mode.To continue to the next SETUP program, press the ▲ or▼ keys to select a new program.SETUPFigure 49SETUPFigure 50MEMMEMmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems21

introductionSETUPFigure 51SETUPpHmVP2.0: Viewing electrode dataThis program lets you check the electrode parameters fordiagnostic purposes.1. Enter the SETUP mode as described on page 21. Themeter automatically goes to program P1.0.2. Press ▲ and ▼ keys to scroll through the programsuntil you view ELE in the primary display and P2.0 inthe secondary display. The electrode annuciator alsoappears.—See Figure 51.3. Press the ENTER key to enter program P2.0. Thesecondary display will read P2.1starting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeFigure 52SETUPFigure 53SETUPpH%pHR.mVThe information you will see in program P2.0 will dependupon which MODE the meter was in prior to shutting themeter off:From the pH measurement MODE:P2.1 shows the mV offset of the electrode.Press ENTER to go to P2.2P2.2 shows the slope in % of the electrode.—See Figures 52 and 53.From the mV measurement MODE:P2.1 shows the mV offset of the electrode—See Figure 54.From the ion measurement MODE (Ion 510 only):P2.1 show the slope in mV of the electrode—See Figure 55.4. To exit P2.0 program press ENTER until ELE is in theprimary display and P2.0 is in the secondary display—See Figure 51. press the ▲ or ▼ keys to select a newprogram OR press CAL/MEAS to return to themeasurement mode.electrodecaretroubleshootingFigure 54additionalinformationSETUPmVppmspecificationsaccessoriesFigure 55warrantyreturn ofitems22

P3.0: Selecting buffer setsThis program lets select between two standard calibrationbuffer sets, depending upon your requirements.The available sets are USA and NIST.1. Enter the SETUP mode as described on page 21. Themeter automatically goes to program P1.0.2. Press ▲ and ▼ keys to scroll through the programs untilyou view bUF in the primary display and P3.0 in thesecondary display. The buffer annuciator also appears.—See Figure 56.3. Press the ENTER key to enter program P3.0. Thesecondary display will read read either USA or nSt.4. Press the ▲ and ▼ keys to select the buffer set yourequire:• USA buffers: 4.01, 7.00 and 10.01USA in the secondary display—See Figure 57.• NIST buffers: 4.01, 6.86 and 9.18nSt in the secondary display—See Figure 58.5. To confirm the buffer set, press ENTER. All thecharacters on the display will flash for about a secondthen returns to P3.0.6. To exit P3.0 program press the ▲ or ▼ keys to select anew program OR press CAL/MEAS to return to themeasurement mode.P4.0: Resetting to factory default settingsThis program resets and clears all calibration data andmemory data EXCEPT the offset value in temperaturecalibration and manually set temperature for manualtemperature compensation. NO is the default setting.1. Enter the SETUP mode as described on page 21.The meter automatically goes to program P1.0.2. Press ▲ and ▼ keys to scroll through the programsuntil you view rSt in the primary display and P4.0 inthe secondary display. The mV and pH annuciators alsoappear. —See Figure 59.3. Press the ENTER key to enter program P4.0. Thesecondary display will read NO. —See Figure 60.4. Press the ▲ and ▼ keys to select NO or YES. SelectingYES erases all calibration values for all modes (pH, mVand ion) and all memory values. —See Figures 60 and 61.5. To confirm the reset, make sure YES is selected andpress ENTER. All the characters on the display willflash for about a second then the meter returns to themeasurement mode.NOTE: Once YES is selected and the ENTER key ispressed, the reset program clears all old calibration dataand memory data. The data is no longer retrievable.You must calibrate the meter before taking any newmeasurements. Meter will however retain buffer setselection (NIST or USA).SETUPFigure 56SETUPFigure 57SETUPFigure 58SETUPFigure 59SETUPFigure 60SETUPFigure 61pHpH mVpH mVpH mVintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems23

9. Electrode Careintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyFigure 62Electrode ActivationDO NOT touch or rub the glass bulb. If you follow thestoring and maintenance procedure, you can use yourelectrode immediately. If the electrode respondssluggishly or drifts, the bulb may be dehydrated.Immerse the electrode in an ideal storage solutionsuch as electrode storage solution or pH 4 buffer solutionfor 1-2 hours to hydrate it. See Storing pH/ORPelectrodes below.If this procedure does not hydrate the electrode,reactivate or replace it.Use 2 or 3 point calibration to test your electrodeperformance. If you do not get good readings, use adifferent pH electrode to confirm the meter is workingproperly. If the results are still not satisfactory, consultyour OAKTON distributor.Electrode MaintenancepH electrodes are susceptible to dirt dehydration andcontamination. Clean them regularly depending on theextent and condition of use.Storing pH/ORP electrodesFor best results, always keep the pH bulb wet, preferablyin pH 4 buffer with 1% saturated KCl. Other pH buffers ortap water are also acceptable storage solutions. Do notstore in de-ionized water. The protective rubber cap filledwith buffer solution is an adequate method for storingpH electrodes.OAKTON ® offers a complete line of low cost electrodestorage and cleaning solutions and containers.After Use1. After each series of measurements, wash theelectrode and reference junction in deionized water.2. If using a refillable electrode, close the refilling hole byreturning its rubber sleeve or stopper plug over theopening in the side of the electrode. —See Figure 62.3. Store the electrode as mentioned above.return ofitems24

Electrode CleaningElectrodes that are mechanically intact can often berestored to normal performance by one or a combinationof the following options.Some suggestions for:a. Salt deposits which are normal on all electrodes.Dissolve the deposit by immersing the electrode intap water for ten to fifteen minutes. Thoroughly rinsewith de-ionized water.b. General dirt and light oil coatings.Soak the electrode for several hours in OAKTONgeneral purpose electrode cleaning solutions.Rinse in deionized or distilled water.c. Oil/Grease FilmsWash the electrode pH bulb in a little dish washingdetergent and water. Rinse the electrode tip withde-ionized water.d. Clogged reference junctionHeat a dilute 1% KCl solution or pH 4.01 buffersolution to 60-80°C. Place the sensing portion of thepH electrode into the heated KCl solution forapproximately 30 minutes. Allow the electrode tocool while immersed in some unheated KCl solutionor pH 4.01 buffer solution. Rinse with deionized water.introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems25

10. TroubleshootingError MessagesThe following table provides a guideline to enablediagnosis of possible problems indicated by themessages generated by the OAKTON WD-35619-series.The table also provides possible solutions to theproblems encountered.introductionstarting upError Message Indicates Cause Corrective ActionErr. 2 (In primary display)During Ion calibration Too few calibration Meter calibrated with only Recalibrate using 2 or more pointsREADYCALpoints1-point in ion calibrationERRpH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationErr. 3 (In primary display)During Ion calibration Slope error Calibration solution not within Recalibrate using fresh ionacceptable rangesolutionsERRBad electrodeReplace electrodeErr. 4 (In primary display)During Ion calibration Calibration points Calibration points more than Recalibrate using calibration pointsmore than 1 decade 1 decade apart 1 decade apartCALREADYapartERRCALsetupmodeelectrodecaretroubleshootingErr (In secondary display) Wrong keypad input. Button does not work Release key. Selectin the currentvalid buttonsMEASREADYpHoperation mode.depending on mode.ERR CATCElectrode icon (Indicator) Calibration error Buffer value does not match Use fresh buffer or checkvalue displayed or electrode electrode connection.CALpHis disconnected or failing. Possibly replace electrodes.additionalinformationERRpHspecificationsUr or Or Measured value Electrode not connected Make sure electrode is connected(In primary display) out of rangeMeter not calibratedRecalibrate meterMEASaccessoriesppmElectrode clogged, dirty orbrokenClean or replace electrodewarrantyMEASpHMeasurement is under rangeor over rangeTreat samples to bring withinmeter measuring rangereturn ofitemsCATC26

TroubleshootingProblem Cause SolutionNothing is displayed when a. AC outlet power not a. Switch on the power supplythe ON/OFF key is selected.switched on.b. AC adapter socket not b. Re-insert Ac adapter socket.inserted properly.Unstable reading a. Insufficient reference a. Fill electrode with referenceelectrolyte in electrode.electrolyte.b. Broken electrode. b. Replace electrode.c. Electrical field c. Remove or switch offinterference (electricalinterfering device.noise caused by anearby motor orultrasonic device).d. Dirty electrode d Clean the electrode.Hydrate if needed.Slow response a. Dirty electrode a. Clean electrode. Hydrateif needed.No response a. HOLD mode in operation a. Cancel HOLD mode. Pressfrom keypad. Hold displayed. See LCD. Hold button.b. Internal program error. b. Reset all internal programsby removing A/C adapterfrom meter and re-insertingintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems27

11. Additional Informationintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitemspH and TemperatureThe pH electrode is affected by temperature changes. Automatic TemperatureCompensation (ATC) compensates for temperature changes. Some solutions show anincrease while others a decrease in pH with the same temperature change. Record thesolution temperature along with the pH value, or the measurement may be meaningless.Temperature changes also affect the signal the pH electrode sends to the meter and causesa loss of accuracy for the reading. To limit the loss of accuracy during calibration, make thetemperature of the pH buffer calibrating solutions and the sample solution the same.pH Buffer Calibration SolutionUse standard buffer solutions to calibrate a pH meter before you measure the pH of a sample.Calibration solutions serve as basis of comparison between measurements. The mostcommon standard buffers are the pH 4.01, pH 7.00 and pH 10.01. For 1-point calibration,use a standard buffer of pH 7.00 or a standard buffer whose pH value is close to that of thesample. Use 2-point calibration when you know the sample is acidic (low pH) or basic (highpH). For acidic samples, use standard buffers of pH 7.00 and pH 4.01. For basic samples,use standards of pH 7.00 and pH 10.01. Use a 3-point calibration when the sample pH iscompletely unknown. Use all pH 7.00, pH 4.01 and pH 10.01 calibration solutions. Contactyour OAKTON ® distributor for information on pH buffer and calibration solutions.Standard pH BuffersThe following table shows the various pH values atdifferent temperature of the solution during calibration.The table also illustrates why a calibration value maybe different from the buffer value at 25°C.Temperature pH buffer values°C °F 4.01 7.00 10.00(phthalate) (neutral (carbonate)phosphate)0 32 4.01 7.12 10.335 41 4.01 7.09 10.2510 50 4.00 7.06 10.1815 59 4.00 7.04 10.1120 68 4.00 7.02 10.0525 77 4.01 7.00 10.0030 86 4.01 6.99 9.9535 95 4.02 6.98 9.9240 104 4.03 6.98 9.8845 113 4.04 6.97 9.8550 122 4.06 6.97 9.8255 131 4.07 6.98 9.8060 140 4.09 6.98 9.7770 158 4.12 6.99 9.7380 176 4.16 7.00 9.6990 194 4.20 7.02 9.6628

12. SpecificationsMode pH 510 Ion 510pH Range 0.0 to 14.0 pHResolution0.01 pHAccuracy±0.01 pHCalibration1 to 3 pointsUSA: 4.01, 7.00, 10.01NIST: 4.01, 6.86, 9.18mV Range -1999 to 1999 mVResolution0.1 mV between ±199.9 mV1 mV beyond ±199.9 mVAccuracy±0.2 mV between ±199.9 mV±2 mV beyond ±199.9 mVCalibrationOffset up to ±150 mVIon Range 0.01 to 1999 ppmResolution0.01 ppm for 0.01 to 0.99 ppm0.1 ppm for 1.0 to 199.9 ppm1 ppm for 200 to 1999 ppmAccuracy±0.5% of full scale for monovalent ions1% of full scale for divalent ionsCalibration2 to 3 points0.1, 1, 10, 100 ppmMinimum slope15 mVMaximum slope90 mVTemp Range 0 to 100°CResolution0.1°CAccuracy±0.3°CCalibration Offset in 0.1°C increments; Offset range: ±5°Cintroductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationTemperature compensation: automatic (ATC) or manual from 0 to 100°COperating temperature: 0 to 50°CPower: 9V DC adapter for 110 or 220 VACDisplay: Dual LCDConnectors: pH/mV/Ion uses BNC connector, temperature usesmini-phono plug, recorder uses mini-pin (sub-mini phono plug)Memory: Stores up to 50 readingsRecorder Output: ±1999 mV directly proportional to inputPower Requirements: 110 or 220 VAC depending upon model.Input Impedance: 10 12 ΩInstrument Drift: < 50 uV/°CInput Bias Current: 50 pA max. at 25°CHold function: YESATC Function: 0.0 to 100.0°CREADY Indicator: YESMeter Dimensions: 7.2” L x 9.2” W x 2.52” H (180 x 230 x 63 mm)Shipping weight: 1.4 lbs (0.64 kg)setupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems29

13. AccessoriesTo order some accessories, contact your OAKTON ®distributor and describe the items listed below.introductionstarting uppH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecareWD-35613-05 ATC probeWD-35615-07 110 VAC adapterWD-35615-08 220 VAC adapterWD-35801-00 OAKTON general purpose pH electrodeWD-35805-04 OAKTON general purpose double junctionrefillable liquid filled pH electrode. Glassbody.WD-35805-15 OAKTON general purpose double junctionORP electrode. Epoxy body.WD-35811-71 OAKTON All-in-One single junction sealedgel filled general purpose pH electrodewith temperature sensor. Epoxy body.WD-00654-00 pH 4.01 buffer calibration solution, 1 pintWD-00654-04 pH 7.01 buffer calibration solution, 1 pintWD-00564-08 pH 10.00 buffer calibration solution, 1 pintWD-35653-00 De-ionized rinse water pouches 20/boxWD-35653-01 pH 4.01 buffer calibration solution pouches20/boxWD-35653-02 pH 7.01 buffer calibration solution pouches20/boxWD-35653-03 pH 10.00 buffer calibration solutionpouches 20/boxWD-35653-04 Buffer pouches assortment pack,5 each pH 4, 7, 10 and rinse watertroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems30

14. WarrantyOAKTON warrants this meter to be free from significantdeviations in material and workmanship for a period ofthree years from date of purchase. OAKTON warrants thisprobe to be free from significant deviations in material andworkmanship for a period of six months from date ofpurchase. If repair or adjustment is necessary and has notbeen the result of abuse or misuse within the warrantiedtime period, please return—freight prepaid—and correctionwill be made without charge. OAKTON alone will determineif the product problem is due to deviations or customermisuse.introductionstarting up15. Return of itemsAuthorization must be obtained from our Customer ServiceDepartment before returning items for any reason. Whenapplying for authorization, please include data regarding thereason the items are to be returned. For your protection,items must be carefully packed to prevent damage in shipmentand insured against possible damage or loss. We willnot be responsible for damage resulting from careless orinsufficient packing. a restocking charge will be made on allunauthorized returns.NOTE: We reserve the right to make improvements indesign, construction, and appearance of products withoutnoticepH calibrationandmeasurementmV calibrationandmeasurementIon calibrationandmeasurementmemoryfunctiontemperaturecalibrationsetupmodeelectrodecaretroubleshootingadditionalinformationspecificationsaccessorieswarrantyreturn ofitems31